#include <stdio.h>



int main()
{
    int nl,nm,i,j,flag,count = 0;
    do{
        printf("Input START and END = ?");
        scanf("%d%d",&nl,&nm);
    }while(!(nl > 0 && nl < nm));
    printf("..............PRIME TABLE(%d - %d)..............\n",nl,nm);
    if(nl == 1 || nl == 2)
    {
        printf("%4d",2);
        nl = 3;
        count++;
    }
    for(i = nl;i <= nm;i++)
    {
        if(!(i%2)) continue;
        for(flag = 1,j = 3;flag && j <i/2;j += 2)
        {
            if(!(i%j))
            {
                flag = 0;
            }
        }
        if(flag)
        {
            printf(++count%15?"%4d":"%4d\n",i);
        }
    }



    return 0;
}
//熊贤豪